Mods censor stuff that breaks the rules. It's their site; they're entitled to do that.
I'm guessing you're using the app. I may be wrong, but I think there are usually a lot of modded comments on the website. We just recently began to see them in the app too.
I'm wondering if the nursing home is even allowed to serve them. Sometimes food pantries and shelters can't serve unsealed food from restaurants, because they can't vouch for the safety of the prep. Although they ought to have told the OP if that was the case; maybe the nurses wanted to take the cookies home.